“You had a productive day?” he said.

Nina wiped the sweat out of her eyes and downed a swig from a warm bottle of lime Gatorade. Nina was no absentminded professor. In a field where a bead or a button can be a major discovery, an archaeologist is trained to look for the tiniest of details. She couldn’t figure Gonzalez. She had noticed little things about him, especially when he thought nobody was looking. She had caught him studying her, the bigtoothed grin absent, the eyes under the fleshy brow as hard as marbles. Nina was an attractive woman and often drew sidelong glances from men. This was more like a lion watching a gazelle. Finally, there was just the way he was always there looking over your shoulder. Not only her. He seemed to be stalking everyone on the expedition.

Nina’s elation at her discoveries overcame her normal caution. “Yes, thank you,” she said. “It was productive. Very productive.”

“I would expect no less of such a knowledgeable scientist. I’m very much looking forward to hearing about it.” He carried the bag over to her tent and placed it out front, then wandered about the encampment as if he were an inspector general making his rounds.

Gonzalez told people he had retired early on the money he made selling Southern California real estate and was indulging his lifelong amateur love of archaeology. He looked to be in his midforties or early fifties, shorter than Nina by several inches, with a thick, powerful blacksmith’s body. His slicked down hair was as shiny and black as a bowling ball. He had joined the expedition through TimeQuest, an organization that placed paying volunteers on archaeological digs. Anybody with a couple of thousand dollars could get a week’s worth of spooning dirt through a sieve with a child’s plastic shovel. The third degree sunburn was thrown in at no extra cost.

Counting herself and Dr. Knox, there were ten people in the party. Gonzalez, of course, and Mr. and Mrs. Bonnell, an older American couple from Iowa who had come in with another pay-as-you-go organization. And to Nina’s regret, there was the insufferable Dr. Fisel from the Moroccan Department of Antiquities, who was said to be a cousin of the king. Completing the party were Fisel’s young assistant, Kassim, a cook, and two Berber drivers who did double duty working on the dig.

The expedition had assembled from various parts of the world in Tarfaya, an oil port on the southern coast. The Moroccan government arranged for the lease from an oil company of three nine-passenger Renault vans to carry people and equipment. The vehicles had made their way along dusty but serviceable roads, following the coastal plain for a couple of hundred miles.

Even today, much of the country was desolate and uninhabited except for small Berber settlements here and there. The territory had been largely unexplored until Mobil and a few other companies started looking for offshore oil deposits.